[SeaBIOS] Virtual Machine Crash on Hypercall
Daniel Castro
evil.dani at gmail.com
Wed Apr 11 05:29:25 CEST 2012
Hello all,
I am have a small problem, when running the BIOS in 16Bit if Y try to
do a hypercall the virtual machines crashes.
Here is the code of the hypercall:
#define _hypercall2(type, name, a1, a2) \
({ \
unsigned long __hentry = xen_hypercall_page+__HYPERVISOR_##name*32; \
long __res, __ign1, __ign2; \
asm volatile ( \
"call *%%eax" \
: "=a" (__res), "=b" (__ign1), "=c" (__ign2) \
: "0" (__hentry), "1" ((long)(a1)), "2" ((long)(a2)) \
: "memory" ); \
(type)__res; \
})
I guess the something is being passed wrong to the call, and the
return address is damaged...
Daniel
--
+-=====---------------------------+
| +---------------------------------+ | This space intentionally blank
for notetaking.
| | | Daniel Castro, |
| | | Consultant/Programmer.|
| | | U Andes |
+-------------------------------------+
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